Actually, i used candle wax on my X45 (i think it was you Ly-El who had suggested it?).
Took a common white candle, made it pointy at one end with a sharp knife and then rubbed it onto the plastic that the ring is riding on (when full deflecting the stick to one side) - onec around of course.
Had to do that two or three times, now its smooth as a babies butt, but still firm.